<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Feedback image for circle</title>
<style type="text/css">
body
	{background-color:silver;
	margin:0;}
div
	{background-color:white;}
</style>
</head>
<body>
<div><img src="" alt="PNG green pixel" ondragstart="event.dataTransfer.effectAllowed = 'copy'"/></div>
<p>Try to drag green circle above. Feedback overlay should be a circle.</p>
</body>
</html>